Operation and Maintenance
Linux Operation and Maintenance
How to determine the linux version number?
How to determine the linux version number?
How to determine the Linux version number? In fact, when people mention Linux, they usually refer to a Linux distribution; but strictly speaking, Linux is a kernel, and a Linux distribution is an operating system composed of the Linux kernel, GNU tools and libraries, and a collection of software. The following article will introduce you to a good way to check the Linux kernel version number and release version. I hope it will be helpful to you.
How to check the version number in Linux?
Method 1: Use the uname command to view the Linux kernel version number
The uname command displays multiple system information, including the Linux kernel architecture, name version and release.
To find out what version of Linux kernel is running on your system, you need to type the following command:
uname -srm
Output
Linux 4.9.0-8-amd64 x86_64
The above output tells us that the Linux kernel is 64-bit, and its The version is "4.9.0-8-amd64".
Method 2: Use the hostnamectl command
hostnamectl is part of systemd and can be used to query and change the system hostname. This command also displays the Linux distribution and kernel version.
hostnamectl
Output:
Static hostname: debian9.localdomain con name: computer-vm Chassis: vm Machine ID: a92099e30f704d559adb18ebc12ddac4 Boot ID: 7607cbe605d44f638d6542d4c7b3878e Virtualization: qemu Operating System: Debian GNU/Linux 9 (stretch) Kernel: Linux 4.9.0-8-amd64 Architecture: x86-64
The above output tells us that the Linux kernel is 64-bit and its version is "4.9.0-8-amd64"; the distribution is "Debian GNU/Linux 9 ( stretch)", the version number is 9.
Method 3: Use the lsb_release command
The lsb_release application can display LSB (Linux Standard Library) information about the Linux distribution; this lsb_release command is suitable for lsb installed -release package for all Linux distributions:
lsb_release -a
Output:
No LSB modules are available. Distributor ID:Debian Description:Debian GNU/Linux 9.5 (stretch) Release:9.5 Codename:stretch
The Linux distribution and version are shown in the "Description" line. As you can see from the output above, what is installed on my system is: Debian GNU/Linux 9.5 (stretch).
Method 4: Use the cat /etc/os-release command
/etc/os-releaseThe file contains operating system identification data, Includes information about distribution. This file is part of systemd, and the Linux system running systemd should have this file.
To view the contents of the os-release file, you need to run the following cat command:
cat /etc/os-release
The output results are as follows:
PRETTY_NAME="Debian GNU/Linux 9 (stretch)" NAME="Debian GNU/Linux" VERSION_ID="9" VERSION="9 (stretch)" ID=debian HOME_URL="https://www.debian.org/" SUPPORT_URL="https://www.debian.org/support" BUG_REPORT_URL="https://bugs.debian.org/"
Method 5: Use cat /etc/issue command
The /etc/issue file contains the system identification text that is displayed before the login prompt. Typically, this file contains information about the Linux version:
To view the contents of the issue file, you need to run the following cat command:
cat /etc/issue
The output will look like this:
Debian GNU/Linux 9 \n \l
Related learning recommendations: linux video tutorial
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